Power-actuated fan



(No Model.) 7

J. POULSON. POWER AGTUATED FAN.

Patented Nov. 26, 1889.

gi lf S a S s E. m n w UNITED STATES PATENT OFFICE.

JOHN PoULsoN, oE PHILLIPSBURG, NEW JERsEv, AssIeNoR TO THE PHILA- DELPHIA ExnAUsT vENT1LAToE ooMPANY, O PENNSYLVANIA.

POWER5ACTUATED FAN.

SPECIFICATION forming part of Letters Patent No. 415,947, dated November 26, 1889. Application filed June 13, 1889. Serial No. 314,169. lllo model.)

To all whom it may concern:

Be it known that I, JOHN POULSON, of Phillipsburg, IVarren county, in the State of New Jersey, have invented an Improvement in 5 Power-Actuated Fans, of which the following is a specification.

My invention relates to power-actuated fans; and it consists of certain improvements, which are fully set forth in the following to specification, and shown in the accompanying drawings, which form a part thereof.

The object of my invention is to construct a fan in which the air-moving or currentcreating blades may be easily adjusted at different angles to change the direction of the aircurrent and cause the draft to move in a more or less upward or downward direction, as may be desired. The mechanism by which this result is accomplished is illustrated in the drawings, in which Figure 1 is a side elevation of a fan embodying my improvements. Fig. 2 is a perspective view of one of the detached blades. Fig. 3 is an inverted plan view of the lock- 2 5 in g device, on an enlarged scale, with the handle broken off; and Fig. 4 is a side elevation of a modification of the fan shown in Fig. 1.

A is a box or frame, in which the currentcreating blades are journaled. This box or frame is secured to the power-shaft B, which is journaled in a suitable support or stationary frame D, and is operated by the power or band wheel C3. The box A is formed with an opening E at its central part, and is pro- 3 5 vided with tubular bearings F opening therein, through which the journals G of the blades lI extend. These blades are provided upon their ends within the opening E of the box A with circular gears I, which engage with a pinion J within the box A. This pinion J is carried by a rod K, provided with a handle 0 of any suitable construction on its end outside of the box A, and has the effect of coupling the blades Il. together through the cir- 4 5 cular gears I.

L is a spring acting between the rod K and box A to keep the rod K and its pinion J normally in a raised position. The rod K is provided with a laterally-extending pin or projection N, which is adapted to engage in notches M, formed on the base of the box A about the opening through which the rod K extends. The spring L normally locks the pin N in one of the notches M, and thus locks the rod K to the box A, and similarly locks the arms or blade H together and to the box A through the action of the pinion and gears. The pinion J is sufficiently long as to never come out of gear by the longitudinal movement of the rod K.

The operation of the device is as follows: \Vhen the shaft Bis rotated, it carries wit-h it the box A, which is secured to it, and thus rotates the arms or blades II about a vertical axis, which blades, as heretofore explained, are locked together and to the box A by means of the pinion J and the pin I. In order to adjust orehange the angles of the blades II, the rod K is drawn down by the handle 0, freeing the pin N, so. that the rod maybe turned. A turning of the rod K turns the pinion J, and, as this pinion gears with the gears I of the blades II, it will correspondingly turn them so as to change the angle of the blades II. It will be seen that these blades 7 5 will be moved in opposite directions and an equal degree. hen the blades are turned to the proper angle, the handle 0 is released and the spring L instantly returns the rod K to its normal position and the pin N engages with another of the notches M, locking the parts together, as heretofore described. It will be seen that by changing the angles of the blades H the direction of the air-current caused by their motion will be correspondingly changed.

While I prefer the details of construction here shown, I do not limit my invention to them, as it is apparent that they may be modifled more or less without departing from the principles of my invention. Thus in Fig. 1 is shown a ceiling-fan, while in Fig. 4 is shown a pedestal-fan supported upon the floor; and it is also evident that the locking-notches and pin might be reversed or placed within the 5 box, as these changes are mere mechanical equivalents.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is- 10o 1. In a power-fan, the combination, with the power-shaft, of a j ournal-box carried thereby, two air-moving blades jonrnaled in said box in line with each other and provided with circular gears upon their inner ends, and a reciprocatable pinion supportedby said journal-box and arranged between and gearing with said gears, whereby the angle of said blades may be changed by turning said pinion.

2. In a power-fan, the combination, with th e power-shaft, of a j ournal-box carried thereby, one or more air-moving blades jonrnaled in said box and provided with circular gears upon their inner ends, and a reciprocatable pinion supported by said journal-box and arranged between and gearing with said gears, whereby the angle of said blades may be changed by turning said pinion, and a lock to normally look said pinion in different positions of adjustment to the journal-box.

3. In a power-fan, the combination, with the power-shaft, of a journal-box carried thereby, one or more air-moving blades journaled in said box and provided with circular gears upon their inner ends, a reciprocatable pinion supported by said journal-box and arranged between and gearing with said gears, whereby the angle of said blades may be changed by turning said pinion, a lock, and a spring device, substantially as described, to normally operate said lock to lock the pinion to the journal-box and permit it to be unlocked for the purpose of shifting the angle of the blades.

4. In a power-fan, a vertical shaft, a rotating journal box or frame carried thereby, two diametrically-opposite fan-blades journaled in said box and having circular gears ontheir inner ends, a vertically-movable pinion arranged between said gears and gearing with themboth, and a shaft to move said pinion up or down, extending below said box and terminating in a handle.

5. In a power-fan, a vertical shaft, a rotating journal box or frame carried thereby, two diametrically-opposite fan-blades journaled in said box and having circular gears on their inner ends arranged transversely to the axis of the blades, a vertically-movable pinion gearing with said gears, a shaft to move said pinion up or down, extending below said box and terminating in a handle, and a spring to force said pinion and shaft upward.

6. In a power-fan, a vertical shaft, a rotating journal box or frame carried thereby, two diametrically-opposite fan-blades journaled in said box and having circular gears on their inner ends arranged transversely to the axis of the blades, a vertically-movable pinion gearing with said gears, a shaft to move said pinion up or down, extending below said box and terminating in a handle, and a. spring to force said pinion and: shaft upward, and a lock to lock said pinion in any position of rotation upon its vertical axis.

7. In a power-fan, a vertical shaft, a rotating journal box or frame carried thereby, two diametrically-opposite fan-blades journaled in said box and having circular gears on their inner ends arranged transversely to the axis of the blades, a vertically-movable pinion gearing with said gears, a shaft to move said pinion up or down, ext-ending below said box and terminating in a handle, and a spring to force said pinion and shaft upward, and a lock to lock said pinion inany position of rotation upon its vertical axis, and consisting of notches and a pin or projection therefor arranged between the box and shaft of the pinion.

In testimony of which invention I have hereunto set my hand.

JOHN POULSON.

IVitnesses: I

J. M. R. SHIMER, FRED. W. SAVERCOOL. 

